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(1) number of Total man is-45
no. of days to complete their work-90
1 man take day to do work-90÷45=2 days
So,30 men will take days-30×2=60 days
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no. of days to complete their work-90
1 man take day to do work-90÷45=2 days
So,30 men will take days-30×2=60 days
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